SOLUTION: A street with two lanes, each 10 ft wide, goes through a semicircular tunnel with radius 12 ft. How high is the tunnel at the edge of each lane?

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Question 1091685: A street with two lanes, each 10 ft wide, goes through a semicircular tunnel with radius 12 ft. How high is the tunnel at the edge of each lane?
Answer by ikleyn(52802) About Me  (Show Source):
You can put this solution on YOUR website!
.
Calculate  sqrt%2812%5E2+-+x%5E2%29 at x = 10, and you will get  


the height =  sqrt%28144+-+100%29 = sqrt%2844%29 = 6.63 ft.